Senior Data Scientist - Hertfordshire, HP2 4YL

Senior Data Scientist - Hertfordshire, HP2 4YL

Senior Data Scientist
UK Remote-First (Occasional travel to head office or park)
Annual salary + bonus and benefits

Are you a passionate data scientist ready to take your career to the next level? As Senior Data Scientist, you’ll lead the way in delivering cutting-edge analytical solutions that unlock real business value. You’ll set the technical standards, make key architectural decisions, and guide the team in building advanced machine learning and statistical models that make a difference. Reporting to the Head of Engineering for Data, you’ll mentor and inspire fellow data scientists, sharing your expertise to elevate the whole team. This role perfectly blends deep technical skill with strategic impact—transforming complex business challenges into innovative, practical data science solutions. Join us and be at the heart of shaping the future with data.

What you’ll be doing:
- Making technical decisions that ensure quality, scalability, and maintainability of all data science solutions.
- Leading architectural design , technology selection, and approving methodologies and technical standards.
- Guiding and supporting data scientists through complex technical challenges and reviewing their approaches.
- Balancing trade-offs between innovation, delivery speed, and technical robustness in decision-making.
- Influencing the technical direction of projects, developing team capabilities, and ensuring long-term sustainability of solutions

What we’d like you to bring:
- Deep expertise in the data science lifecycle , machine learning methodologies, and production deployment, with 5-7+ years of hands-on experience.
- Strong knowledge of cross-functional collaboration , working effectively with product, engineering, analytics, and business stakeholders.
- Expert proficiency in Python, advanced machine learning, statistical modeling, software engineering best practices, and SQL with experience in large-scale systems like Snowflake.
- Strategic problem-solving and technical architecture skills to design scalable, maintainable solutions while setting technical direction and standards.
- Proven leadership through technical guidance , mentorship, code reviews, and knowledge sharing, driving team capability without direct line management responsibilities.

What’s In It For You?
- ‘Holiday Buy Scheme’
- Annual bonus
- Generous discounts on Haven and Warner Hotels holidays for you, your family and friends
- Comprehensive wellbeing support
- Access to the Bourne Leisure corporate box at the O2 Arena ,London
- Exclusive discounts with corporate partners
- Exciting career pathways, including Learning and Development opportunities such as Apprenticeships and Degrees
- Enhanced family friendly policies and pay (eligibility criteria applied)

Who are we?
We’re part of an award-winning Bourne Leisure family, which includes Haven   Warner Hotels. We have 9,000 fantastic team members and 39 beautiful seaside locations and our HQ based in Hemel Hempstead.

What’s it like to work with us?
Our people and the teams they form are the backbone of a professional experience with us. At Haven, we take pride in our Breath of Fresh Air culture, which focuses on valuing and supporting every team member. We prioritise openness and transparency in our interactions allowing our team members to be their authentic selves.
We operate a hybrid working model, meaning 50% of your working week will be spent at the office, occasionally on Park, or at external events.

What can you expect during the recruitment process?
The interview process will be up to 3 stages and may contain a presentation or skills test, depending on the role. Please reach out if you need additional support or specific arrangements to enable you to perform to the fullest during this process.
Diversity, equity, and inclusion are at the heart of who we are and what we do. Our commitment to these values is unwavering and they are central to our mission. We encourage applications from all backgrounds, communities and industries and we are ready to discuss any reasonable adjustments or flexibility that you may require, including whether a role can be part-time or a job-share.
We genuinely care about every candidate's experience during the recruitment process and are here to provide support where we can. If you require any assistance or reasonable adjustments while applying, please don't hesitate to reach out to us at

What We Offer

- Holiday allowance that rises with service, plus a ‘Holiday Buy Scheme’

- Annual bonus

- 20% discount on both Haven and Warner Hotels holiday for you, family and friends

- Comprehensive wellbeing support

- Access to the Bourne Leisure corporate box at the O2 Arena ,London

- Exclusive discounts with corporate partners

- Exciting career pathways, including Learning and Development opportunities such as Apprenticeships and Degrees

- Enhanced family friendly policies and pay (eligibility criteria applied)

How to Apply 
We’re committed to fostering a diverse, equitable, and inclusive workplace, and we encourage applicants of all backgrounds to apply.
To get started, click apply now and answer a few quick questions, which should take 5 minutes. Once submitted, a member of our team will be in touch.